Finding the Fourth Proportional to 1,338,275,423.70, 2,006,633,688.75 and 519,431,130.90
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Solution
The fourth proportional to 1,338,275,423.70, 2,006,633,688.75 and 519,431,130.90 is: 778,844,166.00
Step by Step Solution
- Step 1: Write the proportion equation
1,338,275,423.70 : 2,006,633,688.75 = 519,431,130.90 : x - Step 2: Convert to fraction form
1,338,275,423.70/2,006,633,688.75 = 519,431,130.90/x - Step 3: Cross multiply
1,338,275,423.70x = 2,006,633,688.75 × 519,431,130.90 - Step 4: Simplify right side
1,338,275,423.70x = 1,042,308,006,249,451,008 - Step 5: Solve for x
x = 1,042,308,006,249,451,008/1,338,275,423.70 - Step 6: Final answer
x = 778,844,166.00
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.